CRITICAL CVSS 9.8
Published: 2026-06-09

CVE-2026-26142

microsoft nuance_powerscribe_360 Security Advisory (CVE-2026-26142)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-26142 impacting microsoft nuance_powerscribe_360. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a network.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product microsoft / nuance_powerscribe_360
Affected Versions 4.0.0
Weakness Enumeration CWE-502

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2026-26142 impacting microsoft nuance_powerscribe_360.

⚡ Nuclei Detection Template (YAML) cve-2026-26142.yaml
id: cve-2026-26142

info:
  name: microsoft nuance_powerscribe_360 - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2026-26142 affecting microsoft nuance_powerscribe_360.
    Evaluation: Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a network....
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-26142
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-26142
    cwe-id: CWE-502
  tags: cve,cve-2026-26142,microsoft,nuance_powerscribe_360,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "nuance_powerscribe_360"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-26142.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-26142
# Target: microsoft nuance_powerscribe_360 | CVSS: 9.8 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-26142 (microsoft nuance_powerscribe_360)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against microsoft nuance_powerscribe_360 scope (4.0.0).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2026-26142.sh
# Recommended Remediation & Patching Commands for CVE-2026-26142
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install nuance_powerscribe_360 2>/dev/null || \
sudo dnf upgrade nuance_powerscribe_360 2>/dev/null || \
sudo yum update nuance_powerscribe_360

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i nuance_powerscribe_360 2>/dev/null || rpm -qa | grep -i nuance_powerscribe_360

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-26142 in microsoft nuance_powerscribe_360?

Review vendor-specific security notices and update microsoft nuance_powerscribe_360 packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2026-26142?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2026-26142?

CVE-2026-26142 is classified with a CVSS 3.1 Base Score of 9.8 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.8
CRITICAL SEVERITY
CVE ID CVE-2026-26142
Weakness CWE-502
Vendor microsoft
Product nuance_powerscribe_360
Published 2026-06-09
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H